Software Engineer (Core)

Description We’re a fast-moving, US-Israeli AI startup building next-generation infrastructure for the world’s most demanding AI workloads. Our mission is to accelerate the future of intelligence and make it ubiquitously accessible by delivering full stack custom AI servers optimized for large-scale inference and training. Backed by top-tier investors and led by industry veterans, we’re scaling rapidly. We seek forward-thinking engineers and operators who thrive in a collaborative environment and excel at solving complex challenges from first principles. If you want to build infrastructure that fundamentally changes what the world can accomplish with AI, come join us! About the position  We are looking for an experienced, highly skilled and motivated Software Engineer to join our core team. In this role, you will be responsible for designing, developing, and maintaining critical components of our AI-driven software stack. You will work on the core interfaces that allow applications, frameworks, and APIs to communicate efficiently and reliably with our hardware. This is a hands-on technical position where you will solve complex problems, optimize for performance, and contribute to the next generation of our technology. Responsibilities  • Develop and maintain key components of Majestic software stack, including API layers, command submission pipelines, and memory management • Collaborate with hardware architects to influence the design of next-generation chips and ensure a smooth software/hardware co-design • Work with kernel-space driver developers to define and implement the user/kernel interface • Debug complex issues across the entire stack, from user applications to the underlying hardware • Optimize code for maximum performance, throughput, and efficiency Requirements • Bachelor’s or Master’s in Computer Science, Computer Engineering, or a related field from a recognized university • Proven experience developing software for Linux, with a solid grasp of OS fundamentals like memory management, multi-threading, and inter-process communication • 5-10 years of experience in software development • Proven experience in C programming • Knowledge in GPU programming • Excellent communication skills with a strong track record of cross-functional collaboration Preferred Qualifications  • Experience with Python and C++ • Knowledge of GPU or other accelerator architectures (e.g., CUDA, OpenCL, ROCm) • Knowledge of HPC applications development • Experience in linux kernel-space development We seek smart, curious, self-driven individuals who enjoy creative problem-solving and continuous learning. Even if you don't meet all requirements, we'd love to hear from you if you have the mindset to tackle complex challenges. Majestic Labs is an equal opportunity employer deeply committed to diversity of background and thought. If you are ready to dare greatly, learn from mistakes, engage in vigorous debates, and help create a step-function shift in human technical capability, we want to meet you!